Ink-ribbon guide for type-writing machines.



M. B. SARGENT & A. E. KARLBERG.

INK RIBBON GUIDE FOR TYPE WRITING MACHINES.

APPLICATION FILED JULY 2', 1914.

Patented Oct. 20, 1914.

UNITED STATES PATENT OFFICE.

MARSHALL BIDWELL SARGENT AND ARVID EMANUEL KARLBERG, 0F INDIANAPOLIS,INDIANA, ASSIGNORS T0 THE STENOTYPE COMPANY, OF INDIANAPOLIS, INDIANA.

INK-RIBBON GUIDE FOB TYPE-WRITING MACHINES.

Specication of Letters Patent.

Patented Oct. 20, 1914.

Application led July 2, 1914. Serial No. 848,619,

To all whom it may concern Be it known that we, MARSHALL B. SAR- GENTand Alivio E. KARLBERG, citizens of the United States, residents ofIndianapolis, in the county of Marion and State of Indiana, haveinvented certain new and useful Improvements in Ink-Ribbon Guides for Ty)e-VVriting Machines; and we do hereby dec are the followin to be afull, clear, and exact description o the invention, such as will enableothers skilled in the art to which it a pertains to make and use thesame.

T 1s invention relates to improvements in ink-ribbon guides fortypewriting machines and more particularly to such as are adapt ed foruse on stenographic writing machines in which the inking ribbon 'isdisposed over the top of the frame and moves in a horizontal planebetween the type and the platen,the object of our present inventionbeing to provide a simple and eflicient mounting for the ink-ribbon idleguide spools, whereby said spools may be readily shifted vertically tochange the ribbon path and held in positions to which they may beshifted.

With this and other objects in View, the invention consists in certainnovel features of construction and combinations of parts as hereinafterset forth and pointed out in the claims.

In the accompanying drawingsFigure 1 ,is a plan view of a portion of astenographic writing machine, showing the application of ourimprovements; Figs. 2 and 3 are enlarged sectional views, Fig. 4 is atransverse sectional View, and Fig. 5 is a view showing the partsseparated.

1 represents a portion of the frame of the machine; 2 the type bars; 3the platen and 4 the ink-ribbon reels. Idler guide spools 5 are locatedover the frame near respective ends of the set of type bars and theplaten, and ink-ribbon 6 as it is fed from one rcel to the other, passedabout the idler spools 5 which serve to guide said rib-1 bon properlybetween the type faces and the platen.

Our present invention has reference particularly to the manner ofmounting the idler guide spools 5 whereby they may be raised or loweredto change the ribbon path to present a new or fresh portion of theribbon to 'the action of the type.

Near each end of the platen, a sleeve 7 is passed through the top frameplate 1 of the machine and suitably secured in place, the major portionof each sleeve being made to depend below the under face of saidframe-plate.

Each sleeve 7 serves to receive the lower portion of a post 8, and uponthe upper portion of the latter, an idler guide spool 5 is mounted torotate freely,--vertical displacement of said spool on the post beingprevented by the head of a screw 9 entering the upper end of the post,and such displacement in a downwardly direction being prevented by anannular flange 10 on the ost.

That portion of the post 8 which passes through the sleeve 7 is madewith a longitudinal groove or key-way l1 to receive one end of a screw12 passing through the wall ofthe sleeve 7 and serving as a key toprevent rotation of the post and yet permit vertical movement of thelatter to raise 0r lower the idler guide spool to shift the horizontalplane of the ink-ribbon and thus alter the path of said ribbonrelatively to the printing means.

The post 8 is made with a plurality of recesses 13 (two being shown inthe drawing) arranged in vertical alinement, and adapted to receive alocking ball 14 mounted in a hole 15 in the wall of the sleeve. Thisball is pressed against the post and into engagement with one or theother of the sockets or recess 13, by means of a spring 16 for thepurpose of normally retaining the post and the idler spool which itcarries, in the position to which the same may be shifted. The spring 16is made to partially embrace the sleeve 7. one of its ends being securedby the head of the screw 12 and its free end portion being caused toengage the locking ball 14 and press the same inwardly.

A screw 17 enters the lower end of the post 8 and its head overlies thelower end of the sleeve 5 so as to prevent excessive vertical movementor displacement of the ost.

p Having fully described our invention what we claim as new and desireto secure by Letters-Patent, is

1. A guide spool mounting comprising a fixed sleeve` a post having apart movable longitudinally through said sleeve, means for preventingrotation of said. post, and spring-actuated locking means for holdingsaid post in different positions of longitudinal adjustment.

2. A guide spoolmounting comprisin a fixed sleeve a post having a partmova 1e longitudina 1y through said sleeve, means for preventingrotatlon of said post said post having a plurality of recesses and -saidsleeve having a hole in its wall, a ball mounted in said hole, and aspring pressing said ball toward the post and into one of the recessestherein.

3. The combination with the frame of a typewriting machine, of a sleevepassing through and xed to said frame, a post movable longitudinallythrough said sleeve, an idler spool mounted to rotate freely on saidpost, means for preventing rotation of the post said ost having aplurality of notches and the s eeve having a hole in its wall, a ballmounted in said hole and adapted to engage in one or another of saidnotches, and a sprino' embracing said sleeve and pressing said ballinwardly.

4. The combination with the frame plate of a typewriting machine, of asleeve passing through and fixed to said frame-plate, a post having apart vertically movable through said sleeve, a spool freely rotatable onsaid ost, said post having a ke -way and a plurality of recesses, andthe s eeve having a hole in its wall, a ball mounted in said hole andadapted to enter one or another of said recesses, a screw passingthrough the wall of the sleeve and entering the key-Way in the post, anda spring secured at one end by said screw and having its free endportion in position to engage said ball.

In testimony whereof, we have signed this specification in the presenceof two subscribing witnesses,

MARSHALL BIDWELL SARGENT. AEVID EMANUEL KARLBERG. Witnesses:

J. S. SWEENEY, H. B. WATKINS.

Oopiel o! this patent may be obtained for ive cents each, by addressingthe Commissioner of Patents, Washington, D. 0."

